Calculator.



C. A. MEILICKE.

CHJCLATORx APPLICATNN FILED A111122, 1911.

Patentjd Nev. 15H3..

35 nvr.,

w .ma

QQ... CO1 een e G; A. MEILICKE.

CALCULATOR.

fAPPLICATION FILED H322, 1911.

1,079,712. @med Nov. 25, 1,913.

z SHEETS-Sumava.

may

UNITED 55 .FATES PATET OFFICE.

CARL A. MEILICKE, OF CHlCAGG. LLINOIS, ASSIGNOE TO ,MEILICKE CALCULATOR 'CMIEANY, OIE CHICAGO, LLIEOIS, A CORPORATION OF MAINE.'

Sperme-mien -v To all whom, 1' .f may eminem Br: it known that l, *CARL :i suhjeet ot' the Kingr of Great. Britain, residing at. Chicago. in the eonntjv of (foei: :ind Slate of illinois, have invented pertain new und useful improvements in Ciirnlaieria et whnfh the following :i specification. g

My invention reintes to iinprovermnis in i calculators and in seine of .its teatrales more partiffularly to time and interest minnie., tors wherein the occurrence o Snndiiys and i holidays important to he noted.

)ne et' the salient objects of m3 invention is to provide a simple and eieient :nach ie for the ralendm indications and the minnie-- tinn of interest, h v mechanism improved in general mwingelnent :ind in detail.

A further object ot' in v invention is te pmrhle u lnnrhine wherein indirni nii slender dates, holidays. and numbers aref so rorrehited that the relation of any tivo e? i these faelors to a given third leiter may; readily he ascertained by mechanical :ner

ln the drmvingrs, wherein l have illus traded :in embodiment of my inienlimiT Fig nre l a front View partly in elevation and partly in ventral vertical section of :in interest rzllenhiting maf'hine nl" inv inveniiion: Fifi i! showsI the easing in transverse ver rivali sertion on line of Fin, i :ind rhe interior mechanism in elevation; Fig. :and Fig. 4 are details taken on lines :ln-3 and 4wd', respectively, showing the mijnstinent ,i (intent: Fig is a frngnient :i1-y detail taken troni the right 0f Fin. and Vig. (E and Fig. 7 nre details of a preferred lmliriny wheel :1nd clip arrangement.

ln the drmvingls. the inin'hine. is illnstreed I as affording :i easing whereof i0 a Casting; i

hase, l1 :i front nell, i2 the reading: fare. i

13 and lt angular rear wall nieinivrrs, 'l5 and lh the ileinlnihle end Walls, ith' the easing, nier its ends. are arranged me i standards i? :find its. secured to the lune. und j 1 iiph or sirin 4G, ininrned ns et "ii utters imitant.

Pa rented Nov. 25, 1913. ll eii'nl No 22,704.

; residing the drivingshaft 23, and upon the i shaft :iti are mounted all of the movindmeter-perfs of the machine. The inzit object if the double shaft arranges in permit, the indicator parts to be inf i: ,it a nite of revolution lower lthan n?" the driving shaft 23, and to facilitate me :i nplis'inn o? hand Wheels to the fastertmr ing 'i i fr shaft, at both ends of the n i l: 1 en the driving shaft 23 and i, 'en ,shaft 26, I interpose a r arranged to drive both shafts i rer ions,

t mites e gear, secured at 28 on the 'ingr ett 33, beyond the standard ib, ami .meshing with a gear 29 mounted on i short uit 30, Carried by an arm 18 siffniderd 1.55, said jack shaft bearing on l which meshes with the gear upon the hollow shaft 2G. fiile-d to one end'of the a Collar 34 fixed to the i le said shaft. Q6 free to hearim regardless of pressure :nfl mi ihn part' 32 and 341 by the springd iuris on shaft :'26, hereafter to he retin-reid if i ,i eine distances from the ends of slmf l l @i nre 'ihereto rimmed-spiders or rfirz'ying Wneels und 36, each having its rim ,serreieih ns ai iw-EG' respeetively,-in

crown rerrii, and et suitable intervals on the iong @eeh edge margin of the Chart 40, ediented et 45 and 45', I provide in a peripheral Cohnnn a nnnierienl in'dex, show- I inf: the nnniher of days in the year, Comme mg with l adjacent the detuin line, the im occupied by the Wedge 42 representing tie 365th day. 'These indices I may refer to as number strips for they may be used rows eaeh corresponding with n number of the marginal Column or numher etrip, and in eireumfereninl eolunine oi' any desired number nerording to the limit within whirl; the runehiue Shall work. Clima, in the ordinar 'interest ruieulatoi suoli :la herein sj'ieei ienlly shown, the central eren. of the chart is occupied by u eomyriuted intereet table 6, comprising, for instance, l'oriy tive Columns grouped into live divieions, eueli clivision iuelutlintgr nine columns. In such an rangement, the fue divisions muy representv say, 4%, tiff/j Si?, 55%, and 6%; the nine columns of each division represent 100, 200, ete., to 900; und each Space of the tuhle has printed therein the interest, figured upon the amountJ eluiruoteristie of the partionlar Cireumferential column at the rute character istie of the division :ontaining the column for the number of days indioated by the number, contained in the numerical tuhle 45 or 45', uppurtenunt. to the seine longitudinal row. In thie arrangement of the Chart, .my present machine substantially conforms with the calculating machine shown in my prior .Patent No. 914,439, dotted lliure/h 19, 1909. f

At. each end of the rotatable shaft 2t), I provide a rotatable calendar Wheel, as indieated zal 50 und 51, the rim surface of eaeh constituting a movable calendar stri, said calendars, having their month and day inflioations arranged thereon in reverso order with reference to euch other, asin the ealrulab ing machine of my prior Patent No. 825,4Q6

dated June 1Q, 1905i On euch such enh onder strip5 the day-spacing; eorreeponds *with the number-spacing on the number strip 5). and the mouth-naine or abbreviation pret'eruhly occupies e tabuluntlivision including till or" the dujy spaces ot the month. Eueh .weh calendar wheel is loosely mounted on the shaft Q6 und may be rotated rela-v tively to the rotatable chart 40 for settin adjustment', but is normally carried in rotution with said ehurt through the engagement ot a Suitable springr pawl or detent, Carried by the Calendar wheel with the crown ratehet or serrated edge of the chart drum. Speeitleally, the Calendar Wheel 50 on which the date indieations run bnekwardly with reference to the numbering on the chart 470 may con venieutly be mounted contiguous to one end of the chart drum, and may be provided with a spring pawl 52, engaging the serrated edge or ratchet 35 at' the end of Suid drunr The forwardly reutling calendar wheel :3l hue :tu reu ling? strip or rim edge of the Suituhle spring puwl eiizieetl apart from the Chart, hut said wheel carries e "l' for ennuyeux* l i l il r with the ratchet or serrated edge 36 of the chart; drinn, The, teeth o the ratehets und 3S ere equal in nuruher to the 365 spares of the wheel and the cooperating parte of the spring pawls or tletent ere nl; ranged always to Seat. aecurzxtely between teeth so that the Spaeings of the drum will always mouretely aline with spewing.; of

Calenda r wheel 5l preferably provided with i huh elongation hearing loosely mounted 'thereon one or more holiday Wheels herein :Shown as two in number and indicated :is 5? and 54, the purpose of such duplioation being to afford a current years holiday wheel, and n next years holida.;7 wheel.

The holiday Wheels are preferably of subeiuntiully identical construction, having a rim or holiday strip 56, provided with groottes 57 for the reception of marker clips {See Figs. 6 und 7). Each clip is conatrueted for ready adjustment and removah )ut to grip firmly its strip when properly placed, The form of clip shown, consisting .eubetantiuily of a Uehaped spring metal strip, I lmre found very satisfactory. The markers are preferably oolored,-one oolor for Saturdays, one for Sundays, und another for epeeial holidays. Eaoh of the holiday Wlieele is' eurried in rotation in harmony 'with the calendar wheel il by engagement of the respective spring detents 60 and 61 mounted ou the calendar wheel with the respective toothed surfaces 53 and 54 of the two holiday wheels. For convenience in placing and adjusting the markers 58 on the holiday Wheels and adjusting the holidag7 Wheels bodily relative to the calendar Wheel, an aperture (33 inode in the wall 13 of the easing, where said Wall closely approaches the wheels, .said aperture liaeing normally covered luy a cover plate 6l.

'The face l2 of the machine is provided with u face, plete 65, hearing on its under surface in alimentent with the two calendar Wheels 53 and 54, .email brake r@hoes 60, eac-h lifted norinully from Contact, with its Calendar Wheel by its supporting spring 67, und arranged for depression into Contact with the Wheels by au appropriate brake button (3S or 69, extending through the face plate.

lanifestly, when the brake for calendar `Wheel 50 is depressed by pres'sure applied bo the bleke button 69, rotation of the hand wheel will rotate the drum 40, and ythe Wheels at the right end of the casing, but; the Calendar Wheel 50 will remain stationery until the brake is released. n similar manner, setting of the brake tor wheel 5l will hold stationary the Calender wheel 5'!vq und its eppurtenent holidayY heele 53 and 54, while tliedruin and the olnpffsite Wheel are being rotetell *i t', liner stant calendar' date opposite the datum line 42 of the number strip and interest table, and the holiday wheels` retain their set relation to the calendar wheels 5l throughout the entire normal operation of the machine. It Will be understood, ot course, that the markers 58 on the holiday wheel .355 ma y he set with reference to the ealendar wheel to indicate every legal holiday for the Current year, and the nialters on wheel :'34 correspondingly Set to indieate earl! legalholiday of the next year. When the current, year expires, the wheel 34; does not have its .eetting changed, buty beeomee the Calendar Wheel for the then Current year. ivhile the Setting of the Wheel 573 is rhanged throughoutpto correspond with the then succeeding year. It. will be manifest that (except as to leap-years), the sparing of the Saturday and Sunday marlurr` need never he changed but that by simplyv adjusting' the holiday Wheels bodily relative, to the calendar Wheel so that a Sunday marker Stands opposite the appropriate date of the last Sunda i ot' the year, all of the remainingr Saturday and Sunday markers stand in proper arrange-- ment, so that only the Special markers for such holidays as January lst, February 22nd, and the like, nted be Shifted in ell'eoting the readjustnient, ln leap year, the holiday wheel is eet properly to .show the first Sunday in Maruti and then all Sundays prior to that time must he moved one space to correspond with the appropriate dates and of course, in any nuriierieal calculation which inoludes the 29th of February, allowance must be made of the fact that thaty date doet; not appear upon the calendar ot' the machine.

The face plate 6:3 has made therein a reading aperture 7l), preferably corel-ed with a glass Sheet 7l, and carries in suitable association with the rotatable members of the machine any suitable gage-means to define the reading line for Convenient tollo\\' ing,r of the longitudinal rows ot'- tiguresl on the rotatable parts, and preferably, also tabular matter for identifying the bases on which the '.:lroulnferential Columns of the chart are figured. Thus, as illust rated, the glass plate is underlaid with ay shield 75, oi". paper, having a longitudinal reading slit, 76, just wide enough tu display a rou oi Spaces and longitudinally eti-extensive with and parallel to a longitudinal row of data inclusive of the date indicia on the end calendar wheela 50 and 5l. The ends of the paper screen are. preferably eut away as indicated at 77 to leave exposed enough of the calendar Wheels 'for easy reading of a month name or abbreviation, which preterably reads cireuniferentially. t

The surface of the Shield 75 above and below the reading slot 7G preferably hears.

descrbed in my prior Patr-.it 914,439, indi eating in major divisions, tn), the percentage basis on which the chart tribulations are figured, and on a scale Si. adjacent the lower lip the slot, 76, the particular numbera from to 900 upon which the eorreaponding columns on the chart at() are tigured. Above the reading,l slot 7G the shield prefer ably bears a table 82 of interest reuuiutir tions for different nurnbera of even years based upon the amounts and pereentareay shown in the tables 8() and Slt For most Calculations, the machine should bo set so that the datum line 4;) roineidee with the instant date upon both calendar strips 50 and 5l. To thisy end` the iuetant date on calendar 50 is brought` into register with tht reading slot 'To and then the brake tor said Calendar wheel is eet by depresaing the brake button (if. illust, ifonsiderahle force may be exerted upon the ralendar wheel to lold it atill, and as one of the hand wheels is rotated, rotatirel)v moving the drum 40, the datum line t9 is brought into register with the readingalnt To, and the instant date Space of the Calendar. In anni lar manner, the other calendar strip 5l with its associated holiday wheehs is #et :io that its indication of intstant date alinea uilh thedatuni line 42. The holiday nheele. onre eet. are not di,-;turbed for a year.

As the simplest example of the operation' ol my machina'assume, tor iuatanfe. that January lith, llll, the instant (late, and that interest ou a l0-day note tor i'ltt ie to be figured, and the date ot payment of the note to be ascertainede The nuuhine ir properly set as heretofore deaerihed to 'urina' the inutant date on calendar Strip 5l iu later with line 42. the operator rotate-- either handle until [he nutlilafr titl (in thi number @trip of the drum or chart (the t'hart itselt physically furnis the drum) l0 appeany on poaite the reading slot TG. (llaueinng then at the ealendar wheel 5l, and the current year holidayv wheel 5ft. the operator observes that the Wi day eXp-ire ou Saturday, Maw-h 18th, 15111, whirh it, t'or aueh tratiazuftimxs, a holiday in inlet, States. 'i`heret`orethe operator rotatesy the drum farther until the tirst date not a legal holiday. aeeordingr to the niarlters ol the holiday wheel. aggirare: in the reading slot To. 'Ihrartual future date ot payment thus: irrertained to he March 20, ltlll. so tl at interet musi rr i be paid for tiZ (hiya. in'. by radi tigrures of the eoniputed interest tuirle appearing through the reading :alot (11 ahora the ".100" Column ot' seale Hl, in tlu` i diviaion of seule 80, the operator learns in" tantly that the interest to he paid on eau? note amountsy to $00.861.

lt will he ohvioua to thune skilled in the art that speeial charts may eniploywd vor# g5 tabular matter or indicia, substantially as l ering a wide range ot mail matinal ralrit llO lotions in `which the relatiofis between nun?.- ber of elapsed dage, mileiidar da es., a i days, enter into Calculations; and it regarding entirely the mathematical e letions upon the interest table, tion of a calendar strip i th ada day markers on an iu'ljuslable hoiii'lav and a number strip for sli: days, constitute a device with tages for many diiieren r l variable in forni of con@ tu departure from the essence oi t ment shown.

W liile I have herein descrii'ied in eonsiderable detail for the purpose of full vizir el Y oisolosure one practical and operative emiwdt ment of my invention, it 1viii be onde ,iifvfd by those skilled in the art that man; ci: nges in the arrangement and construction ri-iight be made without departure from the spirit of my invention und within the scope oi the appended claims.

ibut claim s: 1. In e device of the cl'iaracter desoribedf, a support, a. calendar strip inox/ably moi ed thereon bearing consecutive deteinditations, a holidayY strip mounted to movewith said calender strip, and boiiday markers ad justabie upon seid holiday strip into regisn ter with different :lates of the fiale/"nder strip. 2. In a device oi the character described, a support, a. caleiular strip movably mount` ed thereon, a holiday strip mounted with respect to the calendar strip for adjustment; relative thereto and to move therewith, and individually shiftable holiday markers earm ried by l register with lcalendar strip.

4. In a machine of the' character described, the combination of a calendar strip bearing consecutive date indications sliiftable means associated with seid calendar strip, bearing indications for register with dilierent calendar endnr strip.

ln a machine of the character described the combination of a support provi means for iudia'faling a wam endless calendar strip har j' date strip dates to mark holidays, and a' f corr einem in ending with the date spaces of the mlendar strip, said calendar strip and number strip being movable with respect to each other to cause the respective number soeces to register with dil'ersnt date spaces, and' movable with respect to the support e uit diiierent spaties in reading posia ioiiday strip hearing indications ys registering with appropriate of the raie der stri@ and movable ti. IIn a machine of the character described, i'onibinatioa of a support provided with .for indieeting a reading position, an endless Calendar strip bearing' consecutively designetild dat@ spaces, for a year; and endiess number strip having nunibfl if eonserutive spaces correspondan' with the date epilees oi the ealendar sir i, said calender strip and number strip being movable reiw tive to each other to cause the respective numl'iered spaces to rfieggister with different' d spaces, and movable relative to the support to bring different number and date into reading position, and holiday markers associated with the calendar strip' for normal movement therewith, and shiftable relative thereto.

7. In a machine ofv the character describedg the combination of a number strip and two reverseljy reading coexially arranged calendar strips, a number strip aving oonseeutive number spaces, means to support said strips for relative adjustment to cause any given number space to register with different date spaces of either calendar strip, and 'a separate holiday stripbearing indicetions of holidays adjustable with respect to one calendar strip.

I n a machine of the character described, 'the combination of a rotatable calendar Whe-ei having a hub and bearing on its periphery a series of consecutively designated date spaces. e eoexiai holiday Wheel mounted on said hub, and holiday markers sbiiituble upon' said holiday wheel for register with different selected dates of the calendar Wheel. Y

in a machine of the charaeter described, the combination of a support provided with means for'indicating a reading position, e calendar strip provided with consecutive date indications, a number strip provided vwith consecutive number indications, said two strips mounted to said support Vfor movement with respect wto eaeh other and with respect to the reading position to brin any combination of date and number intoY readingr position, separat'i strip adjust# able relative to the calendar strip and normally i'nonable therewith, and shiftable holied by the isnt said strip op ropri utf:

d etes of the` LUL inar'hint of 'a-riml. thel winst-:intuition of a casing. hearing y inalitr shaft lnai'inri' i halt-livarin nmvcnn nt nf on@ of snitl parts rvlatiri? in i the other, antl Separately atljnstahle hnlhlaf; intlif'ating ine-aim carriefl in rotation h v One of saitl parts.

il. In a scribi-tl, the cmnhination of a rntatahle calvntlar v vlintltr lwaring nn it periphery a stiiit nt' Cnihtwiiitiroly designated dat@ Spares. a Coaxial narrow Cylinder nawahie in rotation with sjaitl Calmnlar cylintlr, and holiilay marking; clips spanning the periphcry 0f aitl narrnn' wylintltr and shiftable thereon for ri'igisttr With tlitltrtnt (latespan-e5.

l2, ln a inat'hint nf the Character tlf t'rihtfl. a haring jirmitlttl Willi a Sight nptning, a hnriictintal tliive Shaft freely 1'0- tatalvhl in uithtr .lirtt'tinn txtt\.i1tli.ng through `aitl casing'` hantl lt'nohs l'm' rotating saint) hoynnrl lmth irnils nf the casing, a hnllnw th'ii'tn Shaft rnvtrlnping the driving shaft, :i rttlnt'tinn guar cnnibt'ting said ilriving anti driven Shafts arranged to rntatr said shah in thv saine diret-tion, anti an intlirating tylintlor. having (lata to ht lli-might the @Sing affnrtlii'ig openings antl larger :hre-conste, a tlriw VJnailt nimmttal in will sinallti hvaring-openings. anti e ttntliirg lwynntl thr- @nils of tie. casing, ext 'rit,\r ilrii'ing inval`3`4 aSSOCiatQd with snifl tirim nhaft, a holln'w shaft, surrounding the during shaft. and joni'uilsd in Said larger hearing ret-uses. driving conntvtinns h@- tn'et-n lwill tlriiingiF Amalt; antl Saitl hollow shaft. and intlirating: devices Carried in rotatinn by saitl hnllnw shaft.

lvl. ln a thfvice for calculations involving the mrunix-ence of Sundays and holidays, the. cnniliinatian of a movable ntnnher Strip,

incizlhew mithin a relatirely nim'ahl@ traltntlar strip, and a' hantl in theA presence, nf two witnesses.

CARL A. MIILICKE.

ln the prvsence 0f- (lizn. T. MAY, Jr., Mini" F. ALLEN. 

